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Code Issues Releases Wiki Activity

Add server version to master api

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Add IsEvadedOffense to EFPenalty
Fix remote log reading in not Windows
This commit is contained in:
RaidMax
2018-12-16 21:16:56 -06:00
parent 4067217830
commit 9f92b64135
1676 changed files with 287228 additions and 66 deletions
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852
Master/env_master/Lib/site-packages/pip/utils/__init__.py Normal file
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from __future__ import absolute_import
from collections import deque
import contextlib
import errno
import io
import locale
# we have a submodule named 'logging' which would shadow this if we used the
# regular name:
import logging as std_logging
import re
import os
import posixpath
import shutil
import stat
import subprocess
import sys
import tarfile
import zipfile
from pip.exceptions import InstallationError
from pip.compat import console_to_str, expanduser, stdlib_pkgs
from pip.locations import (
site_packages, user_site, running_under_virtualenv, virtualenv_no_global,
write_delete_marker_file,
)
from pip._vendor import pkg_resources
from pip._vendor.six.moves import input
from pip._vendor.six import PY2
from pip._vendor.retrying import retry
if PY2:
from io import BytesIO as StringIO
else:
from io import StringIO
__all__ = ['rmtree', 'display_path', 'backup_dir',
'ask', 'splitext',
'format_size', 'is_installable_dir',
'is_svn_page', 'file_contents',
'split_leading_dir', 'has_leading_dir',
'normalize_path',
'renames', 'get_terminal_size', 'get_prog',
'unzip_file', 'untar_file', 'unpack_file', 'call_subprocess',
'captured_stdout', 'ensure_dir',
'ARCHIVE_EXTENSIONS', 'SUPPORTED_EXTENSIONS',
'get_installed_version']
logger = std_logging.getLogger(__name__)
BZ2_EXTENSIONS = ('.tar.bz2', '.tbz')
XZ_EXTENSIONS = ('.tar.xz', '.txz', '.tlz', '.tar.lz', '.tar.lzma')
ZIP_EXTENSIONS = ('.zip', '.whl')
TAR_EXTENSIONS = ('.tar.gz', '.tgz', '.tar')
ARCHIVE_EXTENSIONS = (
ZIP_EXTENSIONS + BZ2_EXTENSIONS + TAR_EXTENSIONS + XZ_EXTENSIONS)
SUPPORTED_EXTENSIONS = ZIP_EXTENSIONS + TAR_EXTENSIONS
try:
import bz2 # noqa
SUPPORTED_EXTENSIONS += BZ2_EXTENSIONS
except ImportError:
logger.debug('bz2 module is not available')
try:
# Only for Python 3.3+
import lzma # noqa
SUPPORTED_EXTENSIONS += XZ_EXTENSIONS
except ImportError:
logger.debug('lzma module is not available')
def import_or_raise(pkg_or_module_string, ExceptionType, *args, **kwargs):
try:
return __import__(pkg_or_module_string)
except ImportError:
raise ExceptionType(*args, **kwargs)
def ensure_dir(path):
"""os.path.makedirs without EEXIST."""
try:
os.makedirs(path)
except OSError as e:
if e.errno != errno.EEXIST:
raise
def get_prog():
try:
if os.path.basename(sys.argv[0]) in ('__main__.py', '-c'):
return "%s -m pip" % sys.executable
except (AttributeError, TypeError, IndexError):
pass
return 'pip'
# Retry every half second for up to 3 seconds
@retry(stop_max_delay=3000, wait_fixed=500)
def rmtree(dir, ignore_errors=False):
shutil.rmtree(dir, ignore_errors=ignore_errors,
onerror=rmtree_errorhandler)
def rmtree_errorhandler(func, path, exc_info):
"""On Windows, the files in .svn are read-only, so when rmtree() tries to
remove them, an exception is thrown. We catch that here, remove the
read-only attribute, and hopefully continue without problems."""
# if file type currently read only
if os.stat(path).st_mode & stat.S_IREAD:
# convert to read/write
os.chmod(path, stat.S_IWRITE)
# use the original function to repeat the operation
func(path)
return
else:
raise
def display_path(path):
"""Gives the display value for a given path, making it relative to cwd
if possible."""
path = os.path.normcase(os.path.abspath(path))
if sys.version_info[0] == 2:
path = path.decode(sys.getfilesystemencoding(), 'replace')
path = path.encode(sys.getdefaultencoding(), 'replace')
if path.startswith(os.getcwd() + os.path.sep):
path = '.' + path[len(os.getcwd()):]
return path
def backup_dir(dir, ext='.bak'):
"""Figure out the name of a directory to back up the given dir to
(adding .bak, .bak2, etc)"""
n = 1
extension = ext
while os.path.exists(dir + extension):
n += 1
extension = ext + str(n)
return dir + extension
def ask_path_exists(message, options):
for action in os.environ.get('PIP_EXISTS_ACTION', '').split():
if action in options:
return action
return ask(message, options)
def ask(message, options):
"""Ask the message interactively, with the given possible responses"""
while 1:
if os.environ.get('PIP_NO_INPUT'):
raise Exception(
'No input was expected ($PIP_NO_INPUT set); question: %s' %
message
)
response = input(message)
response = response.strip().lower()
if response not in options:
print(
'Your response (%r) was not one of the expected responses: '
'%s' % (response, ', '.join(options))
)
else:
return response
def format_size(bytes):
if bytes > 1000 * 1000:
return '%.1fMB' % (bytes / 1000.0 / 1000)
elif bytes > 10 * 1000:
return '%ikB' % (bytes / 1000)
elif bytes > 1000:
return '%.1fkB' % (bytes / 1000.0)
else:
return '%ibytes' % bytes
def is_installable_dir(path):
"""Return True if `path` is a directory containing a setup.py file."""
if not os.path.isdir(path):
return False
setup_py = os.path.join(path, 'setup.py')
if os.path.isfile(setup_py):
return True
return False
def is_svn_page(html):
"""
Returns true if the page appears to be the index page of an svn repository
"""
return (re.search(r'<title>[^<]*Revision \d+:', html) and
re.search(r'Powered by (?:<a[^>]*?>)?Subversion', html, re.I))
def file_contents(filename):
with open(filename, 'rb') as fp:
return fp.read().decode('utf-8')
def read_chunks(file, size=io.DEFAULT_BUFFER_SIZE):
"""Yield pieces of data from a file-like object until EOF."""
while True:
chunk = file.read(size)
if not chunk:
break
yield chunk
def split_leading_dir(path):
path = path.lstrip('/').lstrip('\\')
if '/' in path and (('\\' in path and path.find('/') < path.find('\\')) or
'\\' not in path):
return path.split('/', 1)
elif '\\' in path:
return path.split('\\', 1)
else:
return path, ''
def has_leading_dir(paths):
"""Returns true if all the paths have the same leading path name
(i.e., everything is in one subdirectory in an archive)"""
common_prefix = None
for path in paths:
prefix, rest = split_leading_dir(path)
if not prefix:
return False
elif common_prefix is None:
common_prefix = prefix
elif prefix != common_prefix:
return False
return True
def normalize_path(path, resolve_symlinks=True):
"""
Convert a path to its canonical, case-normalized, absolute version.
"""
path = expanduser(path)
if resolve_symlinks:
path = os.path.realpath(path)
else:
path = os.path.abspath(path)
return os.path.normcase(path)
def splitext(path):
"""Like os.path.splitext, but take off .tar too"""
base, ext = posixpath.splitext(path)
if base.lower().endswith('.tar'):
ext = base[-4:] + ext
base = base[:-4]
return base, ext
def renames(old, new):
"""Like os.renames(), but handles renaming across devices."""
# Implementation borrowed from os.renames().
head, tail = os.path.split(new)
if head and tail and not os.path.exists(head):
os.makedirs(head)
shutil.move(old, new)
head, tail = os.path.split(old)
if head and tail:
try:
os.removedirs(head)
except OSError:
pass
def is_local(path):
"""
Return True if path is within sys.prefix, if we're running in a virtualenv.
If we're not in a virtualenv, all paths are considered "local."
"""
if not running_under_virtualenv():
return True
return normalize_path(path).startswith(normalize_path(sys.prefix))
def dist_is_local(dist):
"""
Return True if given Distribution object is installed locally
(i.e. within current virtualenv).
Always True if we're not in a virtualenv.
"""
return is_local(dist_location(dist))
def dist_in_usersite(dist):
"""
Return True if given Distribution is installed in user site.
"""
norm_path = normalize_path(dist_location(dist))
return norm_path.startswith(normalize_path(user_site))
def dist_in_site_packages(dist):
"""
Return True if given Distribution is installed in
distutils.sysconfig.get_python_lib().
"""
return normalize_path(
dist_location(dist)
).startswith(normalize_path(site_packages))
def dist_is_editable(dist):
"""Is distribution an editable install?"""
for path_item in sys.path:
egg_link = os.path.join(path_item, dist.project_name + '.egg-link')
if os.path.isfile(egg_link):
return True
return False
def get_installed_distributions(local_only=True,
skip=stdlib_pkgs,
include_editables=True,
editables_only=False,
user_only=False):
"""
Return a list of installed Distribution objects.
If ``local_only`` is True (default), only return installations
local to the current virtualenv, if in a virtualenv.
``skip`` argument is an iterable of lower-case project names to
ignore; defaults to stdlib_pkgs
If ``editables`` is False, don't report editables.
If ``editables_only`` is True , only report editables.
If ``user_only`` is True , only report installations in the user
site directory.
"""
if local_only:
local_test = dist_is_local
else:
def local_test(d):
return True
if include_editables:
def editable_test(d):
return True
else:
def editable_test(d):
return not dist_is_editable(d)
if editables_only:
def editables_only_test(d):
return dist_is_editable(d)
else:
def editables_only_test(d):
return True
if user_only:
user_test = dist_in_usersite
else:
def user_test(d):
return True
return [d for d in pkg_resources.working_set
if local_test(d) and
d.key not in skip and
editable_test(d) and
editables_only_test(d) and
user_test(d)
]
def egg_link_path(dist):
"""
Return the path for the .egg-link file if it exists, otherwise, None.
There's 3 scenarios:
1) not in a virtualenv
try to find in site.USER_SITE, then site_packages
2) in a no-global virtualenv
try to find in site_packages
3) in a yes-global virtualenv
try to find in site_packages, then site.USER_SITE
(don't look in global location)
For #1 and #3, there could be odd cases, where there's an egg-link in 2
locations.
This method will just return the first one found.
"""
sites = []
if running_under_virtualenv():
if virtualenv_no_global():
sites.append(site_packages)
else:
sites.append(site_packages)
if user_site:
sites.append(user_site)
else:
if user_site:
sites.append(user_site)
sites.append(site_packages)
for site in sites:
egglink = os.path.join(site, dist.project_name) + '.egg-link'
if os.path.isfile(egglink):
return egglink
def dist_location(dist):
"""
Get the site-packages location of this distribution. Generally
this is dist.location, except in the case of develop-installed
packages, where dist.location is the source code location, and we
want to know where the egg-link file is.
"""
egg_link = egg_link_path(dist)
if egg_link:
return egg_link
return dist.location
def get_terminal_size():
"""Returns a tuple (x, y) representing the width(x) and the height(x)
in characters of the terminal window."""
def ioctl_GWINSZ(fd):
try:
import fcntl
import termios
import struct
cr = struct.unpack(
'hh',
fcntl.ioctl(fd, termios.TIOCGWINSZ, '1234')
)
except:
return None
if cr == (0, 0):
return None
return cr
cr = ioctl_GWINSZ(0) or ioctl_GWINSZ(1) or ioctl_GWINSZ(2)
if not cr:
try:
fd = os.open(os.ctermid(), os.O_RDONLY)
cr = ioctl_GWINSZ(fd)
os.close(fd)
except:
pass
if not cr:
cr = (os.environ.get('LINES', 25), os.environ.get('COLUMNS', 80))
return int(cr[1]), int(cr[0])
def current_umask():
"""Get the current umask which involves having to set it temporarily."""
mask = os.umask(0)
os.umask(mask)
return mask
def unzip_file(filename, location, flatten=True):
"""
Unzip the file (with path `filename`) to the destination `location`. All
files are written based on system defaults and umask (i.e. permissions are
not preserved), except that regular file members with any execute
permissions (user, group, or world) have "chmod +x" applied after being
written. Note that for windows, any execute changes using os.chmod are
no-ops per the python docs.
"""
ensure_dir(location)
zipfp = open(filename, 'rb')
try:
zip = zipfile.ZipFile(zipfp, allowZip64=True)
leading = has_leading_dir(zip.namelist()) and flatten
for info in zip.infolist():
name = info.filename
data = zip.read(name)
fn = name
if leading:
fn = split_leading_dir(name)[1]
fn = os.path.join(location, fn)
dir = os.path.dirname(fn)
if fn.endswith('/') or fn.endswith('\\'):
# A directory
ensure_dir(fn)
else:
ensure_dir(dir)
fp = open(fn, 'wb')
try:
fp.write(data)
finally:
fp.close()
mode = info.external_attr >> 16
# if mode and regular file and any execute permissions for
# user/group/world?
if mode and stat.S_ISREG(mode) and mode & 0o111:
# make dest file have execute for user/group/world
# (chmod +x) no-op on windows per python docs
os.chmod(fn, (0o777 - current_umask() | 0o111))
finally:
zipfp.close()
def untar_file(filename, location):
"""
Untar the file (with path `filename`) to the destination `location`.
All files are written based on system defaults and umask (i.e. permissions
are not preserved), except that regular file members with any execute
permissions (user, group, or world) have "chmod +x" applied after being
written. Note that for windows, any execute changes using os.chmod are
no-ops per the python docs.
"""
ensure_dir(location)
if filename.lower().endswith('.gz') or filename.lower().endswith('.tgz'):
mode = 'r:gz'
elif filename.lower().endswith(BZ2_EXTENSIONS):
mode = 'r:bz2'
elif filename.lower().endswith(XZ_EXTENSIONS):
mode = 'r:xz'
elif filename.lower().endswith('.tar'):
mode = 'r'
else:
logger.warning(
'Cannot determine compression type for file %s', filename,
)
mode = 'r:*'
tar = tarfile.open(filename, mode)
try:
# note: python<=2.5 doesn't seem to know about pax headers, filter them
leading = has_leading_dir([
member.name for member in tar.getmembers()
if member.name != 'pax_global_header'
])
for member in tar.getmembers():
fn = member.name
if fn == 'pax_global_header':
continue
if leading:
fn = split_leading_dir(fn)[1]
path = os.path.join(location, fn)
if member.isdir():
ensure_dir(path)
elif member.issym():
try:
tar._extract_member(member, path)
except Exception as exc:
# Some corrupt tar files seem to produce this
# (specifically bad symlinks)
logger.warning(
'In the tar file %s the member %s is invalid: %s',
filename, member.name, exc,
)
continue
else:
try:
fp = tar.extractfile(member)
except (KeyError, AttributeError) as exc:
# Some corrupt tar files seem to produce this
# (specifically bad symlinks)
logger.warning(
'In the tar file %s the member %s is invalid: %s',
filename, member.name, exc,
)
continue
ensure_dir(os.path.dirname(path))
with open(path, 'wb') as destfp:
shutil.copyfileobj(fp, destfp)
fp.close()
# Update the timestamp (useful for cython compiled files)
tar.utime(member, path)
# member have any execute permissions for user/group/world?
if member.mode & 0o111:
# make dest file have execute for user/group/world
# no-op on windows per python docs
os.chmod(path, (0o777 - current_umask() | 0o111))
finally:
tar.close()
def unpack_file(filename, location, content_type, link):
filename = os.path.realpath(filename)
if (content_type == 'application/zip' or
filename.lower().endswith(ZIP_EXTENSIONS) or
zipfile.is_zipfile(filename)):
unzip_file(
filename,
location,
flatten=not filename.endswith('.whl')
)
elif (content_type == 'application/x-gzip' or
tarfile.is_tarfile(filename) or
filename.lower().endswith(
TAR_EXTENSIONS + BZ2_EXTENSIONS + XZ_EXTENSIONS)):
untar_file(filename, location)
elif (content_type and content_type.startswith('text/html') and
is_svn_page(file_contents(filename))):
# We don't really care about this
from pip.vcs.subversion import Subversion
Subversion('svn+' + link.url).unpack(location)
else:
# FIXME: handle?
# FIXME: magic signatures?
logger.critical(
'Cannot unpack file %s (downloaded from %s, content-type: %s); '
'cannot detect archive format',
filename, location, content_type,
)
raise InstallationError(
'Cannot determine archive format of %s' % location
)
def call_subprocess(cmd, show_stdout=True, cwd=None,
on_returncode='raise',
command_desc=None,
extra_environ=None, spinner=None):
# This function's handling of subprocess output is confusing and I
# previously broke it terribly, so as penance I will write a long comment
# explaining things.
#
# The obvious thing that affects output is the show_stdout=
# kwarg. show_stdout=True means, let the subprocess write directly to our
# stdout. Even though it is nominally the default, it is almost never used
# inside pip (and should not be used in new code without a very good
# reason); as of 2016-02-22 it is only used in a few places inside the VCS
# wrapper code. Ideally we should get rid of it entirely, because it
# creates a lot of complexity here for a rarely used feature.
#
# Most places in pip set show_stdout=False. What this means is:
# - We connect the child stdout to a pipe, which we read.
# - By default, we hide the output but show a spinner -- unless the
# subprocess exits with an error, in which case we show the output.
# - If the --verbose option was passed (= loglevel is DEBUG), then we show
# the output unconditionally. (But in this case we don't want to show
# the output a second time if it turns out that there was an error.)
#
# stderr is always merged with stdout (even if show_stdout=True).
if show_stdout:
stdout = None
else:
stdout = subprocess.PIPE
if command_desc is None:
cmd_parts = []
for part in cmd:
if ' ' in part or '\n' in part or '"' in part or "'" in part:
part = '"%s"' % part.replace('"', '\\"')
cmd_parts.append(part)
command_desc = ' '.join(cmd_parts)
logger.debug("Running command %s", command_desc)
env = os.environ.copy()
if extra_environ:
env.update(extra_environ)
try:
proc = subprocess.Popen(
cmd, stderr=subprocess.STDOUT, stdin=None, stdout=stdout,
cwd=cwd, env=env)
except Exception as exc:
logger.critical(
"Error %s while executing command %s", exc, command_desc,
)
raise
if stdout is not None:
all_output = []
while True:
line = console_to_str(proc.stdout.readline())
if not line:
break
line = line.rstrip()
all_output.append(line + '\n')
if logger.getEffectiveLevel() <= std_logging.DEBUG:
# Show the line immediately
logger.debug(line)
else:
# Update the spinner
if spinner is not None:
spinner.spin()
proc.wait()
if spinner is not None:
if proc.returncode:
spinner.finish("error")
else:
spinner.finish("done")
if proc.returncode:
if on_returncode == 'raise':
if (logger.getEffectiveLevel() > std_logging.DEBUG and
not show_stdout):
logger.info(
'Complete output from command %s:', command_desc,
)
logger.info(
''.join(all_output) +
'\n----------------------------------------'
)
raise InstallationError(
'Command "%s" failed with error code %s in %s'
% (command_desc, proc.returncode, cwd))
elif on_returncode == 'warn':
logger.warning(
'Command "%s" had error code %s in %s',
command_desc, proc.returncode, cwd,
)
elif on_returncode == 'ignore':
pass
else:
raise ValueError('Invalid value: on_returncode=%s' %
repr(on_returncode))
if not show_stdout:
return ''.join(all_output)
def read_text_file(filename):
"""Return the contents of *filename*.
Try to decode the file contents with utf-8, the preferred system encoding
(e.g., cp1252 on some Windows machines), and latin1, in that order.
Decoding a byte string with latin1 will never raise an error. In the worst
case, the returned string will contain some garbage characters.
"""
with open(filename, 'rb') as fp:
data = fp.read()
encodings = ['utf-8', locale.getpreferredencoding(False), 'latin1']
for enc in encodings:
try:
data = data.decode(enc)
except UnicodeDecodeError:
continue
break
assert type(data) != bytes # Latin1 should have worked.
return data
def _make_build_dir(build_dir):
os.makedirs(build_dir)
write_delete_marker_file(build_dir)
class FakeFile(object):
"""Wrap a list of lines in an object with readline() to make
ConfigParser happy."""
def __init__(self, lines):
self._gen = (l for l in lines)
def readline(self):
try:
try:
return next(self._gen)
except NameError:
return self._gen.next()
except StopIteration:
return ''
def __iter__(self):
return self._gen
class StreamWrapper(StringIO):
@classmethod
def from_stream(cls, orig_stream):
cls.orig_stream = orig_stream
return cls()
# compileall.compile_dir() needs stdout.encoding to print to stdout
@property
def encoding(self):
return self.orig_stream.encoding
@contextlib.contextmanager
def captured_output(stream_name):
"""Return a context manager used by captured_stdout/stdin/stderr
that temporarily replaces the sys stream *stream_name* with a StringIO.
Taken from Lib/support/__init__.py in the CPython repo.
"""
orig_stdout = getattr(sys, stream_name)
setattr(sys, stream_name, StreamWrapper.from_stream(orig_stdout))
try:
yield getattr(sys, stream_name)
finally:
setattr(sys, stream_name, orig_stdout)
def captured_stdout():
"""Capture the output of sys.stdout:
with captured_stdout() as stdout:
print('hello')
self.assertEqual(stdout.getvalue(), 'hello\n')
Taken from Lib/support/__init__.py in the CPython repo.
"""
return captured_output('stdout')
class cached_property(object):
"""A property that is only computed once per instance and then replaces
itself with an ordinary attribute. Deleting the attribute resets the
property.
Source: https://github.com/bottlepy/bottle/blob/0.11.5/bottle.py#L175
"""
def __init__(self, func):
self.__doc__ = getattr(func, '__doc__')
self.func = func
def __get__(self, obj, cls):
if obj is None:
# We're being accessed from the class itself, not from an object
return self
value = obj.__dict__[self.func.__name__] = self.func(obj)
return value
def get_installed_version(dist_name, lookup_dirs=None):
"""Get the installed version of dist_name avoiding pkg_resources cache"""
# Create a requirement that we'll look for inside of setuptools.
req = pkg_resources.Requirement.parse(dist_name)
# We want to avoid having this cached, so we need to construct a new
# working set each time.
if lookup_dirs is None:
working_set = pkg_resources.WorkingSet()
else:
working_set = pkg_resources.WorkingSet(lookup_dirs)
# Get the installed distribution from our working set
dist = working_set.find(req)
# Check to see if we got an installed distribution or not, if we did
# we want to return it's version.
return dist.version if dist else None
def consume(iterator):
"""Consume an iterable at C speed."""
deque(iterator, maxlen=0)

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"""
This code was taken from https://github.com/ActiveState/appdirs and modified
to suit our purposes.
"""
from __future__ import absolute_import
import os
import sys
from pip.compat import WINDOWS, expanduser
from pip._vendor.six import PY2, text_type
def user_cache_dir(appname):
r"""
Return full path to the user-specific cache dir for this application.
"appname" is the name of application.
Typical user cache directories are:
macOS: ~/Library/Caches/<AppName>
Unix: ~/.cache/<AppName> (XDG default)
Windows: C:\Users\<username>\AppData\Local\<AppName>\Cache
On Windows the only suggestion in the MSDN docs is that local settings go
in the `CSIDL_LOCAL_APPDATA` directory. This is identical to the
non-roaming app data dir (the default returned by `user_data_dir`). Apps
typically put cache data somewhere *under* the given dir here. Some
examples:
...\Mozilla\Firefox\Profiles\<ProfileName>\Cache
...\Acme\SuperApp\Cache\1.0
OPINION: This function appends "Cache" to the `CSIDL_LOCAL_APPDATA` value.
"""
if WINDOWS:
# Get the base path
path = os.path.normpath(_get_win_folder("CSIDL_LOCAL_APPDATA"))
# When using Python 2, return paths as bytes on Windows like we do on
# other operating systems. See helper function docs for more details.
if PY2 and isinstance(path, text_type):
path = _win_path_to_bytes(path)
# Add our app name and Cache directory to it
path = os.path.join(path, appname, "Cache")
elif sys.platform == "darwin":
# Get the base path
path = expanduser("~/Library/Caches")
# Add our app name to it
path = os.path.join(path, appname)
else:
# Get the base path
path = os.getenv("XDG_CACHE_HOME", expanduser("~/.cache"))
# Add our app name to it
path = os.path.join(path, appname)
return path
def user_data_dir(appname, roaming=False):
"""
Return full path to the user-specific data dir for this application.
"appname" is the name of application.
If None, just the system directory is returned.
"roaming" (boolean, default False) can be set True to use the Windows
roaming appdata directory. That means that for users on a Windows
network setup for roaming profiles, this user data will be
sync'd on login. See
<http://technet.microsoft.com/en-us/library/cc766489(WS.10).aspx>
for a discussion of issues.
Typical user data directories are:
macOS: ~/Library/Application Support/<AppName>
Unix: ~/.local/share/<AppName> # or in
$XDG_DATA_HOME, if defined
Win XP (not roaming): C:\Documents and Settings\<username>\ ...
...Application Data\<AppName>
Win XP (roaming): C:\Documents and Settings\<username>\Local ...
...Settings\Application Data\<AppName>
Win 7 (not roaming): C:\\Users\<username>\AppData\Local\<AppName>
Win 7 (roaming): C:\\Users\<username>\AppData\Roaming\<AppName>
For Unix, we follow the XDG spec and support $XDG_DATA_HOME.
That means, by default "~/.local/share/<AppName>".
"""
if WINDOWS:
const = roaming and "CSIDL_APPDATA" or "CSIDL_LOCAL_APPDATA"
path = os.path.join(os.path.normpath(_get_win_folder(const)), appname)
elif sys.platform == "darwin":
path = os.path.join(
expanduser('~/Library/Application Support/'),
appname,
)
else:
path = os.path.join(
os.getenv('XDG_DATA_HOME', expanduser("~/.local/share")),
appname,
)
return path
def user_config_dir(appname, roaming=True):
"""Return full path to the user-specific config dir for this application.
"appname" is the name of application.
If None, just the system directory is returned.
"roaming" (boolean, default True) can be set False to not use the
Windows roaming appdata directory. That means that for users on a
Windows network setup for roaming profiles, this user data will be
sync'd on login. See
<http://technet.microsoft.com/en-us/library/cc766489(WS.10).aspx>
for a discussion of issues.
Typical user data directories are:
macOS: same as user_data_dir
Unix: ~/.config/<AppName>
Win *: same as user_data_dir
For Unix, we follow the XDG spec and support $XDG_CONFIG_HOME.
That means, by default "~/.config/<AppName>".
"""
if WINDOWS:
path = user_data_dir(appname, roaming=roaming)
elif sys.platform == "darwin":
path = user_data_dir(appname)
else:
path = os.getenv('XDG_CONFIG_HOME', expanduser("~/.config"))
path = os.path.join(path, appname)
return path
# for the discussion regarding site_config_dirs locations
# see <https://github.com/pypa/pip/issues/1733>
def site_config_dirs(appname):
"""Return a list of potential user-shared config dirs for this application.
"appname" is the name of application.
Typical user config directories are:
macOS: /Library/Application Support/<AppName>/
Unix: /etc or $XDG_CONFIG_DIRS[i]/<AppName>/ for each value in
$XDG_CONFIG_DIRS
Win XP: C:\Documents and Settings\All Users\Application ...
...Data\<AppName>\
Vista: (Fail! "C:\ProgramData" is a hidden *system* directory
on Vista.)
Win 7: Hidden, but writeable on Win 7:
C:\ProgramData\<AppName>\
"""
if WINDOWS:
path = os.path.normpath(_get_win_folder("CSIDL_COMMON_APPDATA"))
pathlist = [os.path.join(path, appname)]
elif sys.platform == 'darwin':
pathlist = [os.path.join('/Library/Application Support', appname)]
else:
# try looking in $XDG_CONFIG_DIRS
xdg_config_dirs = os.getenv('XDG_CONFIG_DIRS', '/etc/xdg')
if xdg_config_dirs:
pathlist = [
os.path.join(expanduser(x), appname)
for x in xdg_config_dirs.split(os.pathsep)
]
else:
pathlist = []
# always look in /etc directly as well
pathlist.append('/etc')
return pathlist
# -- Windows support functions --
def _get_win_folder_from_registry(csidl_name):
"""
This is a fallback technique at best. I'm not sure if using the
registry for this guarantees us the correct answer for all CSIDL_*
names.
"""
import _winreg
shell_folder_name = {
"CSIDL_APPDATA": "AppData",
"CSIDL_COMMON_APPDATA": "Common AppData",
"CSIDL_LOCAL_APPDATA": "Local AppData",
}[csidl_name]
key = _winreg.OpenKey(
_winreg.HKEY_CURRENT_USER,
r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders"
)
directory, _type = _winreg.QueryValueEx(key, shell_folder_name)
return directory
def _get_win_folder_with_ctypes(csidl_name):
csidl_const = {
"CSIDL_APPDATA": 26,
"CSIDL_COMMON_APPDATA": 35,
"CSIDL_LOCAL_APPDATA": 28,
}[csidl_name]
buf = ctypes.create_unicode_buffer(1024)
ctypes.windll.shell32.SHGetFolderPathW(None, csidl_const, None, 0, buf)
# Downgrade to short path name if have highbit chars. See
# <http://bugs.activestate.com/show_bug.cgi?id=85099>.
has_high_char = False
for c in buf:
if ord(c) > 255:
has_high_char = True
break
if has_high_char:
buf2 = ctypes.create_unicode_buffer(1024)
if ctypes.windll.kernel32.GetShortPathNameW(buf.value, buf2, 1024):
buf = buf2
return buf.value
if WINDOWS:
try:
import ctypes
_get_win_folder = _get_win_folder_with_ctypes
except ImportError:
_get_win_folder = _get_win_folder_from_registry
def _win_path_to_bytes(path):
"""Encode Windows paths to bytes. Only used on Python 2.
Motivation is to be consistent with other operating systems where paths
are also returned as bytes. This avoids problems mixing bytes and Unicode
elsewhere in the codebase. For more details and discussion see
<https://github.com/pypa/pip/issues/3463>.
If encoding using ASCII and MBCS fails, return the original Unicode path.
"""
for encoding in ('ASCII', 'MBCS'):
try:
return path.encode(encoding)
except (UnicodeEncodeError, LookupError):
pass
return path

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from __future__ import absolute_import
import os.path
import tempfile
from pip.utils import rmtree
class BuildDirectory(object):
def __init__(self, name=None, delete=None):
# If we were not given an explicit directory, and we were not given an
# explicit delete option, then we'll default to deleting.
if name is None and delete is None:
delete = True
if name is None:
# We realpath here because some systems have their default tmpdir
# symlinked to another directory. This tends to confuse build
# scripts, so we canonicalize the path by traversing potential
# symlinks here.
name = os.path.realpath(tempfile.mkdtemp(prefix="pip-build-"))
# If we were not given an explicit directory, and we were not given
# an explicit delete option, then we'll default to deleting.
if delete is None:
delete = True
self.name = name
self.delete = delete
def __repr__(self):
return "<{} {!r}>".format(self.__class__.__name__, self.name)
def __enter__(self):
return self.name
def __exit__(self, exc, value, tb):
self.cleanup()
def cleanup(self):
if self.delete:
rmtree(self.name)

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"""
A module that implements tooling to enable easy warnings about deprecations.
"""
from __future__ import absolute_import
import logging
import warnings
class PipDeprecationWarning(Warning):
pass
class Pending(object):
pass
class RemovedInPip10Warning(PipDeprecationWarning):
pass
class RemovedInPip11Warning(PipDeprecationWarning, Pending):
pass
class Python26DeprecationWarning(PipDeprecationWarning):
pass
# Warnings <-> Logging Integration
_warnings_showwarning = None
def _showwarning(message, category, filename, lineno, file=None, line=None):
if file is not None:
if _warnings_showwarning is not None:
_warnings_showwarning(
message, category, filename, lineno, file, line,
)
else:
if issubclass(category, PipDeprecationWarning):
# We use a specially named logger which will handle all of the
# deprecation messages for pip.
logger = logging.getLogger("pip.deprecations")
# This is purposely using the % formatter here instead of letting
# the logging module handle the interpolation. This is because we
# want it to appear as if someone typed this entire message out.
log_message = "DEPRECATION: %s" % message
# PipDeprecationWarnings that are Pending still have at least 2
# versions to go until they are removed so they can just be
# warnings. Otherwise, they will be removed in the very next
# version of pip. We want these to be more obvious so we use the
# ERROR logging level.
if issubclass(category, Pending):
logger.warning(log_message)
else:
logger.error(log_message)
else:
_warnings_showwarning(
message, category, filename, lineno, file, line,
)
def install_warning_logger():
# Enable our Deprecation Warnings
warnings.simplefilter("default", PipDeprecationWarning, append=True)
global _warnings_showwarning
if _warnings_showwarning is None:
_warnings_showwarning = warnings.showwarning
warnings.showwarning = _showwarning

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import codecs
import locale
import re
BOMS = [
(codecs.BOM_UTF8, 'utf8'),
(codecs.BOM_UTF16, 'utf16'),
(codecs.BOM_UTF16_BE, 'utf16-be'),
(codecs.BOM_UTF16_LE, 'utf16-le'),
(codecs.BOM_UTF32, 'utf32'),
(codecs.BOM_UTF32_BE, 'utf32-be'),
(codecs.BOM_UTF32_LE, 'utf32-le'),
]
ENCODING_RE = re.compile(b'coding[:=]\s*([-\w.]+)')
def auto_decode(data):
"""Check a bytes string for a BOM to correctly detect the encoding
Fallback to locale.getpreferredencoding(False) like open() on Python3"""
for bom, encoding in BOMS:
if data.startswith(bom):
return data[len(bom):].decode(encoding)
# Lets check the first two lines as in PEP263
for line in data.split(b'\n')[:2]:
if line[0:1] == b'#' and ENCODING_RE.search(line):
encoding = ENCODING_RE.search(line).groups()[0].decode('ascii')
return data.decode(encoding)
return data.decode(locale.getpreferredencoding(False))

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import os
import os.path
from pip.compat import get_path_uid
def check_path_owner(path):
# If we don't have a way to check the effective uid of this process, then
# we'll just assume that we own the directory.
if not hasattr(os, "geteuid"):
return True
previous = None
while path != previous:
if os.path.lexists(path):
# Check if path is writable by current user.
if os.geteuid() == 0:
# Special handling for root user in order to handle properly
# cases where users use sudo without -H flag.
try:
path_uid = get_path_uid(path)
except OSError:
return False
return path_uid == 0
else:
return os.access(path, os.W_OK)
else:
previous, path = path, os.path.dirname(path)

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from __future__ import absolute_import
import re
import ctypes
import platform
import warnings
def glibc_version_string():
"Returns glibc version string, or None if not using glibc."
# ctypes.CDLL(None) internally calls dlopen(NULL), and as the dlopen
# manpage says, "If filename is NULL, then the returned handle is for the
# main program". This way we can let the linker do the work to figure out
# which libc our process is actually using.
process_namespace = ctypes.CDLL(None)
try:
gnu_get_libc_version = process_namespace.gnu_get_libc_version
except AttributeError:
# Symbol doesn't exist -> therefore, we are not linked to
# glibc.
return None
# Call gnu_get_libc_version, which returns a string like "2.5"
gnu_get_libc_version.restype = ctypes.c_char_p
version_str = gnu_get_libc_version()
# py2 / py3 compatibility:
if not isinstance(version_str, str):
version_str = version_str.decode("ascii")
return version_str
# Separated out from have_compatible_glibc for easier unit testing
def check_glibc_version(version_str, required_major, minimum_minor):
# Parse string and check against requested version.
#
# We use a regexp instead of str.split because we want to discard any
# random junk that might come after the minor version -- this might happen
# in patched/forked versions of glibc (e.g. Linaro's version of glibc
# uses version strings like "2.20-2014.11"). See gh-3588.
m = re.match(r"(?P<major>[0-9]+)\.(?P<minor>[0-9]+)", version_str)
if not m:
warnings.warn("Expected glibc version with 2 components major.minor,"
" got: %s" % version_str, RuntimeWarning)
return False
return (int(m.group("major")) == required_major and
int(m.group("minor")) >= minimum_minor)
def have_compatible_glibc(required_major, minimum_minor):
version_str = glibc_version_string()
if version_str is None:
return False
return check_glibc_version(version_str, required_major, minimum_minor)
# platform.libc_ver regularly returns completely nonsensical glibc
# versions. E.g. on my computer, platform says:
#
# ~$ python2.7 -c 'import platform; print(platform.libc_ver())'
# ('glibc', '2.7')
# ~$ python3.5 -c 'import platform; print(platform.libc_ver())'
# ('glibc', '2.9')
#
# But the truth is:
#
# ~$ ldd --version
# ldd (Debian GLIBC 2.22-11) 2.22
#
# This is unfortunate, because it means that the linehaul data on libc
# versions that was generated by pip 8.1.2 and earlier is useless and
# misleading. Solution: instead of using platform, use our code that actually
# works.
def libc_ver():
glibc_version = glibc_version_string()
if glibc_version is None:
# For non-glibc platforms, fall back on platform.libc_ver
return platform.libc_ver()
else:
return ("glibc", glibc_version)

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from __future__ import absolute_import
import hashlib
from pip.exceptions import HashMismatch, HashMissing, InstallationError
from pip.utils import read_chunks
from pip._vendor.six import iteritems, iterkeys, itervalues
# The recommended hash algo of the moment. Change this whenever the state of
# the art changes; it won't hurt backward compatibility.
FAVORITE_HASH = 'sha256'
# Names of hashlib algorithms allowed by the --hash option and ``pip hash``
# Currently, those are the ones at least as collision-resistant as sha256.
STRONG_HASHES = ['sha256', 'sha384', 'sha512']
class Hashes(object):
"""A wrapper that builds multiple hashes at once and checks them against
known-good values
"""
def __init__(self, hashes=None):
"""
:param hashes: A dict of algorithm names pointing to lists of allowed
hex digests
"""
self._allowed = {} if hashes is None else hashes
def check_against_chunks(self, chunks):
"""Check good hashes against ones built from iterable of chunks of
data.
Raise HashMismatch if none match.
"""
gots = {}
for hash_name in iterkeys(self._allowed):
try:
gots[hash_name] = hashlib.new(hash_name)
except (ValueError, TypeError):
raise InstallationError('Unknown hash name: %s' % hash_name)
for chunk in chunks:
for hash in itervalues(gots):
hash.update(chunk)
for hash_name, got in iteritems(gots):
if got.hexdigest() in self._allowed[hash_name]:
return
self._raise(gots)
def _raise(self, gots):
raise HashMismatch(self._allowed, gots)
def check_against_file(self, file):
"""Check good hashes against a file-like object
Raise HashMismatch if none match.
"""
return self.check_against_chunks(read_chunks(file))
def check_against_path(self, path):
with open(path, 'rb') as file:
return self.check_against_file(file)
def __nonzero__(self):
"""Return whether I know any known-good hashes."""
return bool(self._allowed)
def __bool__(self):
return self.__nonzero__()
class MissingHashes(Hashes):
"""A workalike for Hashes used when we're missing a hash for a requirement
It computes the actual hash of the requirement and raises a HashMissing
exception showing it to the user.
"""
def __init__(self):
"""Don't offer the ``hashes`` kwarg."""
# Pass our favorite hash in to generate a "gotten hash". With the
# empty list, it will never match, so an error will always raise.
super(MissingHashes, self).__init__(hashes={FAVORITE_HASH: []})
def _raise(self, gots):
raise HashMissing(gots[FAVORITE_HASH].hexdigest())

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from __future__ import absolute_import
import contextlib
import logging
import logging.handlers
import os
try:
import threading
except ImportError:
import dummy_threading as threading
from pip.compat import WINDOWS
from pip.utils import ensure_dir
try:
from pip._vendor import colorama
# Lots of different errors can come from this, including SystemError and
# ImportError.
except Exception:
colorama = None
_log_state = threading.local()
_log_state.indentation = 0
@contextlib.contextmanager
def indent_log(num=2):
"""
A context manager which will cause the log output to be indented for any
log messages emitted inside it.
"""
_log_state.indentation += num
try:
yield
finally:
_log_state.indentation -= num
def get_indentation():
return getattr(_log_state, 'indentation', 0)
class IndentingFormatter(logging.Formatter):
def format(self, record):
"""
Calls the standard formatter, but will indent all of the log messages
by our current indentation level.
"""
formatted = logging.Formatter.format(self, record)
formatted = "".join([
(" " * get_indentation()) + line
for line in formatted.splitlines(True)
])
return formatted
def _color_wrap(*colors):
def wrapped(inp):
return "".join(list(colors) + [inp, colorama.Style.RESET_ALL])
return wrapped
class ColorizedStreamHandler(logging.StreamHandler):
# Don't build up a list of colors if we don't have colorama
if colorama:
COLORS = [
# This needs to be in order from highest logging level to lowest.
(logging.ERROR, _color_wrap(colorama.Fore.RED)),
(logging.WARNING, _color_wrap(colorama.Fore.YELLOW)),
]
else:
COLORS = []
def __init__(self, stream=None):
logging.StreamHandler.__init__(self, stream)
if WINDOWS and colorama:
self.stream = colorama.AnsiToWin32(self.stream)
def should_color(self):
# Don't colorize things if we do not have colorama
if not colorama:
return False
real_stream = (
self.stream if not isinstance(self.stream, colorama.AnsiToWin32)
else self.stream.wrapped
)
# If the stream is a tty we should color it
if hasattr(real_stream, "isatty") and real_stream.isatty():
return True
# If we have an ASNI term we should color it
if os.environ.get("TERM") == "ANSI":
return True
# If anything else we should not color it
return False
def format(self, record):
msg = logging.StreamHandler.format(self, record)
if self.should_color():
for level, color in self.COLORS:
if record.levelno >= level:
msg = color(msg)
break
return msg
class BetterRotatingFileHandler(logging.handlers.RotatingFileHandler):
def _open(self):
ensure_dir(os.path.dirname(self.baseFilename))
return logging.handlers.RotatingFileHandler._open(self)
class MaxLevelFilter(logging.Filter):
def __init__(self, level):
self.level = level
def filter(self, record):
return record.levelno < self.level

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from __future__ import absolute_import
import datetime
import json
import logging
import os.path
import sys
from pip._vendor import lockfile
from pip._vendor.packaging import version as packaging_version
from pip.compat import total_seconds, WINDOWS
from pip.models import PyPI
from pip.locations import USER_CACHE_DIR, running_under_virtualenv
from pip.utils import ensure_dir, get_installed_version
from pip.utils.filesystem import check_path_owner
SELFCHECK_DATE_FMT = "%Y-%m-%dT%H:%M:%SZ"
logger = logging.getLogger(__name__)
class VirtualenvSelfCheckState(object):
def __init__(self):
self.statefile_path = os.path.join(sys.prefix, "pip-selfcheck.json")
# Load the existing state
try:
with open(self.statefile_path) as statefile:
self.state = json.load(statefile)
except (IOError, ValueError):
self.state = {}
def save(self, pypi_version, current_time):
# Attempt to write out our version check file
with open(self.statefile_path, "w") as statefile:
json.dump(
{
"last_check": current_time.strftime(SELFCHECK_DATE_FMT),
"pypi_version": pypi_version,
},
statefile,
sort_keys=True,
separators=(",", ":")
)
class GlobalSelfCheckState(object):
def __init__(self):
self.statefile_path = os.path.join(USER_CACHE_DIR, "selfcheck.json")
# Load the existing state
try:
with open(self.statefile_path) as statefile:
self.state = json.load(statefile)[sys.prefix]
except (IOError, ValueError, KeyError):
self.state = {}
def save(self, pypi_version, current_time):
# Check to make sure that we own the directory
if not check_path_owner(os.path.dirname(self.statefile_path)):
return
# Now that we've ensured the directory is owned by this user, we'll go
# ahead and make sure that all our directories are created.
ensure_dir(os.path.dirname(self.statefile_path))
# Attempt to write out our version check file
with lockfile.LockFile(self.statefile_path):
if os.path.exists(self.statefile_path):
with open(self.statefile_path) as statefile:
state = json.load(statefile)
else:
state = {}
state[sys.prefix] = {
"last_check": current_time.strftime(SELFCHECK_DATE_FMT),
"pypi_version": pypi_version,
}
with open(self.statefile_path, "w") as statefile:
json.dump(state, statefile, sort_keys=True,
separators=(",", ":"))
def load_selfcheck_statefile():
if running_under_virtualenv():
return VirtualenvSelfCheckState()
else:
return GlobalSelfCheckState()
def pip_version_check(session):
"""Check for an update for pip.
Limit the frequency of checks to once per week. State is stored either in
the active virtualenv or in the user's USER_CACHE_DIR keyed off the prefix
of the pip script path.
"""
installed_version = get_installed_version("pip")
if installed_version is None:
return
pip_version = packaging_version.parse(installed_version)
pypi_version = None
try:
state = load_selfcheck_statefile()
current_time = datetime.datetime.utcnow()
# Determine if we need to refresh the state
if "last_check" in state.state and "pypi_version" in state.state:
last_check = datetime.datetime.strptime(
state.state["last_check"],
SELFCHECK_DATE_FMT
)
if total_seconds(current_time - last_check) < 7 * 24 * 60 * 60:
pypi_version = state.state["pypi_version"]
# Refresh the version if we need to or just see if we need to warn
if pypi_version is None:
resp = session.get(
PyPI.pip_json_url,
headers={"Accept": "application/json"},
)
resp.raise_for_status()
pypi_version = [
v for v in sorted(
list(resp.json()["releases"]),
key=packaging_version.parse,
)
if not packaging_version.parse(v).is_prerelease
][-1]
# save that we've performed a check
state.save(pypi_version, current_time)
remote_version = packaging_version.parse(pypi_version)
# Determine if our pypi_version is older
if (pip_version < remote_version and
pip_version.base_version != remote_version.base_version):
# Advise "python -m pip" on Windows to avoid issues
# with overwriting pip.exe.
if WINDOWS:
pip_cmd = "python -m pip"
else:
pip_cmd = "pip"
logger.warning(
"You are using pip version %s, however version %s is "
"available.\nYou should consider upgrading via the "
"'%s install --upgrade pip' command.",
pip_version, pypi_version, pip_cmd
)
except Exception:
logger.debug(
"There was an error checking the latest version of pip",
exc_info=True,
)

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from __future__ import absolute_import
from email.parser import FeedParser
import logging
import sys
from pip._vendor.packaging import specifiers
from pip._vendor.packaging import version
from pip._vendor import pkg_resources
from pip import exceptions
logger = logging.getLogger(__name__)
def check_requires_python(requires_python):
"""
Check if the python version in use match the `requires_python` specifier.
Returns `True` if the version of python in use matches the requirement.
Returns `False` if the version of python in use does not matches the
requirement.
Raises an InvalidSpecifier if `requires_python` have an invalid format.
"""
if requires_python is None:
# The package provides no information
return True
requires_python_specifier = specifiers.SpecifierSet(requires_python)
# We only use major.minor.micro
python_version = version.parse('.'.join(map(str, sys.version_info[:3])))
return python_version in requires_python_specifier
def get_metadata(dist):
if (isinstance(dist, pkg_resources.DistInfoDistribution) and
dist.has_metadata('METADATA')):
return dist.get_metadata('METADATA')
elif dist.has_metadata('PKG-INFO'):
return dist.get_metadata('PKG-INFO')
def check_dist_requires_python(dist):
metadata = get_metadata(dist)
feed_parser = FeedParser()
feed_parser.feed(metadata)
pkg_info_dict = feed_parser.close()
requires_python = pkg_info_dict.get('Requires-Python')
try:
if not check_requires_python(requires_python):
raise exceptions.UnsupportedPythonVersion(
"%s requires Python '%s' but the running Python is %s" % (
dist.project_name,
requires_python,
'.'.join(map(str, sys.version_info[:3])),)
)
except specifiers.InvalidSpecifier as e:
logger.warning(
"Package %s has an invalid Requires-Python entry %s - %s" % (
dist.project_name, requires_python, e))
return

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# Shim to wrap setup.py invocation with setuptools
SETUPTOOLS_SHIM = (
"import setuptools, tokenize;__file__=%r;"
"f=getattr(tokenize, 'open', open)(__file__);"
"code=f.read().replace('\\r\\n', '\\n');"
"f.close();"
"exec(compile(code, __file__, 'exec'))"
)

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from __future__ import absolute_import
from __future__ import division
import itertools
import sys
from signal import signal, SIGINT, default_int_handler
import time
import contextlib
import logging
from pip.compat import WINDOWS
from pip.utils import format_size
from pip.utils.logging import get_indentation
from pip._vendor import six
from pip._vendor.progress.bar import Bar, IncrementalBar
from pip._vendor.progress.helpers import (WritelnMixin,
HIDE_CURSOR, SHOW_CURSOR)
from pip._vendor.progress.spinner import Spinner
try:
from pip._vendor import colorama
# Lots of different errors can come from this, including SystemError and
# ImportError.
except Exception:
colorama = None
logger = logging.getLogger(__name__)
def _select_progress_class(preferred, fallback):
encoding = getattr(preferred.file, "encoding", None)
# If we don't know what encoding this file is in, then we'll just assume
# that it doesn't support unicode and use the ASCII bar.
if not encoding:
return fallback
# Collect all of the possible characters we want to use with the preferred
# bar.
characters = [
getattr(preferred, "empty_fill", six.text_type()),
getattr(preferred, "fill", six.text_type()),
]
characters += list(getattr(preferred, "phases", []))
# Try to decode the characters we're using for the bar using the encoding
# of the given file, if this works then we'll assume that we can use the
# fancier bar and if not we'll fall back to the plaintext bar.
try:
six.text_type().join(characters).encode(encoding)
except UnicodeEncodeError:
return fallback
else:
return preferred
_BaseBar = _select_progress_class(IncrementalBar, Bar)
class InterruptibleMixin(object):
"""
Helper to ensure that self.finish() gets called on keyboard interrupt.
This allows downloads to be interrupted without leaving temporary state
(like hidden cursors) behind.
This class is similar to the progress library's existing SigIntMixin
helper, but as of version 1.2, that helper has the following problems:
1. It calls sys.exit().
2. It discards the existing SIGINT handler completely.
3. It leaves its own handler in place even after an uninterrupted finish,
which will have unexpected delayed effects if the user triggers an
unrelated keyboard interrupt some time after a progress-displaying
download has already completed, for example.
"""
def __init__(self, *args, **kwargs):
"""
Save the original SIGINT handler for later.
"""
super(InterruptibleMixin, self).__init__(*args, **kwargs)
self.original_handler = signal(SIGINT, self.handle_sigint)
# If signal() returns None, the previous handler was not installed from
# Python, and we cannot restore it. This probably should not happen,
# but if it does, we must restore something sensible instead, at least.
# The least bad option should be Python's default SIGINT handler, which
# just raises KeyboardInterrupt.
if self.original_handler is None:
self.original_handler = default_int_handler
def finish(self):
"""
Restore the original SIGINT handler after finishing.
This should happen regardless of whether the progress display finishes
normally, or gets interrupted.
"""
super(InterruptibleMixin, self).finish()
signal(SIGINT, self.original_handler)
def handle_sigint(self, signum, frame):
"""
Call self.finish() before delegating to the original SIGINT handler.
This handler should only be in place while the progress display is
active.
"""
self.finish()
self.original_handler(signum, frame)
class DownloadProgressMixin(object):
def __init__(self, *args, **kwargs):
super(DownloadProgressMixin, self).__init__(*args, **kwargs)
self.message = (" " * (get_indentation() + 2)) + self.message
@property
def downloaded(self):
return format_size(self.index)
@property
def download_speed(self):
# Avoid zero division errors...
if self.avg == 0.0:
return "..."
return format_size(1 / self.avg) + "/s"
@property
def pretty_eta(self):
if self.eta:
return "eta %s" % self.eta_td
return ""
def iter(self, it, n=1):
for x in it:
yield x
self.next(n)
self.finish()
class WindowsMixin(object):
def __init__(self, *args, **kwargs):
# The Windows terminal does not support the hide/show cursor ANSI codes
# even with colorama. So we'll ensure that hide_cursor is False on
# Windows.
# This call neds to go before the super() call, so that hide_cursor
# is set in time. The base progress bar class writes the "hide cursor"
# code to the terminal in its init, so if we don't set this soon
# enough, we get a "hide" with no corresponding "show"...
if WINDOWS and self.hide_cursor:
self.hide_cursor = False
super(WindowsMixin, self).__init__(*args, **kwargs)
# Check if we are running on Windows and we have the colorama module,
# if we do then wrap our file with it.
if WINDOWS and colorama:
self.file = colorama.AnsiToWin32(self.file)
# The progress code expects to be able to call self.file.isatty()
# but the colorama.AnsiToWin32() object doesn't have that, so we'll
# add it.
self.file.isatty = lambda: self.file.wrapped.isatty()
# The progress code expects to be able to call self.file.flush()
# but the colorama.AnsiToWin32() object doesn't have that, so we'll
# add it.
self.file.flush = lambda: self.file.wrapped.flush()
class DownloadProgressBar(WindowsMixin, InterruptibleMixin,
DownloadProgressMixin, _BaseBar):
file = sys.stdout
message = "%(percent)d%%"
suffix = "%(downloaded)s %(download_speed)s %(pretty_eta)s"
class DownloadProgressSpinner(WindowsMixin, InterruptibleMixin,
DownloadProgressMixin, WritelnMixin, Spinner):
file = sys.stdout
suffix = "%(downloaded)s %(download_speed)s"
def next_phase(self):
if not hasattr(self, "_phaser"):
self._phaser = itertools.cycle(self.phases)
return next(self._phaser)
def update(self):
message = self.message % self
phase = self.next_phase()
suffix = self.suffix % self
line = ''.join([
message,
" " if message else "",
phase,
" " if suffix else "",
suffix,
])
self.writeln(line)
################################################################
# Generic "something is happening" spinners
#
# We don't even try using progress.spinner.Spinner here because it's actually
# simpler to reimplement from scratch than to coerce their code into doing
# what we need.
################################################################
@contextlib.contextmanager
def hidden_cursor(file):
# The Windows terminal does not support the hide/show cursor ANSI codes,
# even via colorama. So don't even try.
if WINDOWS:
yield
# We don't want to clutter the output with control characters if we're
# writing to a file, or if the user is running with --quiet.
# See https://github.com/pypa/pip/issues/3418
elif not file.isatty() or logger.getEffectiveLevel() > logging.INFO:
yield
else:
file.write(HIDE_CURSOR)
try:
yield
finally:
file.write(SHOW_CURSOR)
class RateLimiter(object):
def __init__(self, min_update_interval_seconds):
self._min_update_interval_seconds = min_update_interval_seconds
self._last_update = 0
def ready(self):
now = time.time()
delta = now - self._last_update
return delta >= self._min_update_interval_seconds
def reset(self):
self._last_update = time.time()
class InteractiveSpinner(object):
def __init__(self, message, file=None, spin_chars="-\\|/",
# Empirically, 8 updates/second looks nice
min_update_interval_seconds=0.125):
self._message = message
if file is None:
file = sys.stdout
self._file = file
self._rate_limiter = RateLimiter(min_update_interval_seconds)
self._finished = False
self._spin_cycle = itertools.cycle(spin_chars)
self._file.write(" " * get_indentation() + self._message + " ... ")
self._width = 0
def _write(self, status):
assert not self._finished
# Erase what we wrote before by backspacing to the beginning, writing
# spaces to overwrite the old text, and then backspacing again
backup = "\b" * self._width
self._file.write(backup + " " * self._width + backup)
# Now we have a blank slate to add our status
self._file.write(status)
self._width = len(status)
self._file.flush()
self._rate_limiter.reset()
def spin(self):
if self._finished:
return
if not self._rate_limiter.ready():
return
self._write(next(self._spin_cycle))
def finish(self, final_status):
if self._finished:
return
self._write(final_status)
self._file.write("\n")
self._file.flush()
self._finished = True
# Used for dumb terminals, non-interactive installs (no tty), etc.
# We still print updates occasionally (once every 60 seconds by default) to
# act as a keep-alive for systems like Travis-CI that take lack-of-output as
# an indication that a task has frozen.
class NonInteractiveSpinner(object):
def __init__(self, message, min_update_interval_seconds=60):
self._message = message
self._finished = False
self._rate_limiter = RateLimiter(min_update_interval_seconds)
self._update("started")
def _update(self, status):
assert not self._finished
self._rate_limiter.reset()
logger.info("%s: %s", self._message, status)
def spin(self):
if self._finished:
return
if not self._rate_limiter.ready():
return
self._update("still running...")
def finish(self, final_status):
if self._finished:
return
self._update("finished with status '%s'" % (final_status,))
self._finished = True
@contextlib.contextmanager
def open_spinner(message):
# Interactive spinner goes directly to sys.stdout rather than being routed
# through the logging system, but it acts like it has level INFO,
# i.e. it's only displayed if we're at level INFO or better.
# Non-interactive spinner goes through the logging system, so it is always
# in sync with logging configuration.
if sys.stdout.isatty() and logger.getEffectiveLevel() <= logging.INFO:
spinner = InteractiveSpinner(message)
else:
spinner = NonInteractiveSpinner(message)
try:
with hidden_cursor(sys.stdout):
yield spinner
except KeyboardInterrupt:
spinner.finish("canceled")
raise
except Exception:
spinner.finish("error")
raise
else:
spinner.finish("done")